IBML
SC18-2274-00
OEM FUNCTIONAL SPECIFICATIONS
for
IBM-H3xxx-Ax (133/171/256/342MB)
3.5-Inch Hard Disk Drive with ATA Interface
Revision (0.0)
IBML
SC18-2274-00
OEM FUNCTIONAL SPECIFICATIONS
for
IBM-H3xxx-Ax (133/171/256/342MB)
3.5-Inch Hard Disk Drive with ATA Interface
Revision (0.0)
First Edition (June 1993)
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 Copyright International Business Machines Corporation 1993. All rights reserved.
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Contents
1.0 General .
1.1 References
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2.0 General Features
3.0
3.1
3.2
3.3
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Fixed Disk Subsystem Description
Control Electronics . . . . . . . .
Head Disk Assembly . . . . . . .
Actuator
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4.0 Fixed Disk Characteristics . . . . . . .
4.1 Formatted Capacity . . . . . . . . . . .
4.2 Data Sheet . . . . . . . . . . . . . . . .
4.3 Performance Characteristics . . . . . .
4.3.1 Command Overhead . . . . . . . .
4.3.2 Mechanical Positioning . . . . . .
4.3.3 Drive Ready Time . . . . . . . . .
4.3.4 Data Transfer Speed . . . . . . . .
4.3.5 Buffering Operation (Look-Ahead)
5.0 File Organization
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5.1 File Format
5.2 Cylinder Allocation
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6.0 Defect Flagging Strategy
6.1 Shipped Format . . . . .
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7.0 Specification . . . . . . . . . . . . . . . . .
7.1 Electrical Interface Specifications . . . . .
7.1.1 Connectors . . . . . . . . . . . . . . .
7.1.2 Signal Definitions
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7.1.3 Interface Logic Signal Levels . . . . .
7.1.4 Reset Timings
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7.1.5 PIO Timings . . . . . . . . . . . . . .
7.1.6 Addressing of H D D Registers
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7.1.7 Cabling
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7.1.8 Jumper Settings . . . . . . . . . . . . .
7.2 Environment . . . . . . . . . . . . . . . . .
7.2.1 Temperature and Humidity . . . . . .
7.2.2 Corrosion Test . . . . . . . . . . . . .
7.3 DC Power Requirement . . . . . . . . . .
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7.4 Reliability
7.4.1 Data Integrity . . . . . . . . . . . . . .
7.4.2 Cable Noise Interference
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7.4.3 Mean Time Between Failures (MTBF)
7.4.4 Usage . . . . . . . . . . . . . . . . . .
7.4.5 Contact Start Stop (CSS) . . . . . . .
7.4.6 Useful Life
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7.4.7 Preventive Maintenance . . . . . . . .
7.4.8 Data Reliability . . . . . . . . . . . . .
7.4.9 Seek/ID Mis-Compare Errors
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 Copyright IBM Corp. 1993
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7.4.10 Equipment Errors . . . . . . . . . . . . . . . .
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7.5 Mechanical Specifications
7.5.1 Physical Dimensions . . . . . . . . . . . . . . .
7.5.2 Mounting Holes . . . . . . . . . . . . . . . . .
7.5.3 Connector and Jumper Description . . . . . .
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7.5.4 Drive Mounting
7.5.5 Shipping Zone and Lock . . . . . . . . . . . .
7.6 Vibration and Shock
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7.6.1 Operating Vibration . . . . . . . . . . . . . . .
7.6.2 Non-Operating Vibration . . . . . . . . . . . .
7.6.3 Operating Shock . . . . . . . . . . . . . . . . .
7.6.4 Non-Operating shock . . . . . . . . . . . . . .
7.7 Acoustics . . . . . . . . . . . . . . . . . . . . . . . .
7.7.1 Sound Power . . . . . . . . . . . . . . . . . . .
7.8 Identification . . . . . . . . . . . . . . . . . . . . . .
7.8.1 Labels . . . . . . . . . . . . . . . . . . . . . . .
7.9 Safety . . . . . . . . . . . . . . . . . . . . . . . . . .
7.9.1 Underwriters Lab (UL) Approval . . . . . . .
7.9.2 Canadian Standards Authority (CSA) Approval
7.9.3 IEC Compliance . . . . . . . . . . . . . . . . .
7.9.4 Flammability . . . . . . . . . . . . . . . . . . .
7.9.5 Safe Handling . . . . . . . . . . . . . . . . . . .
7.9.6 Environment . . . . . . . . . . . . . . . . . . .
7.9.7 Secondary Circuit Protection . . . . . . . . . .
7.10 Electromagnetic Compatibility . . . . . . . . . . .
Appendix A. Test Points
A.1 R/W Channel . . .
A.1.1 Analog . . . .
A.1.2 Digital . . . . .
A.2 Servo Channel . . .
A.2.1 Digital . . . . .
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Appendix B. Mechanical Drawings
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B.1 Isometric View
B.2 Outline Dimensions
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B.3 Mounting Holes . . . . . . . .
B.4 Interface Connector . . . . . .
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O E M Functional Specifications for IBM 3.5-Inch Hard Disk Drive
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1.0 General
This document describes the characteristics of the IBM-H3xxx-Ax 3.5-Inch hard disk drives which conform
to the AT Attachment or Integrated Drive Electronic (IDE) interface as defined by the Common Access
Method (CAM) committee. It also defines the hardware functional specifications. For details about the
interface specification, refer to A T A Interface Specification.
1.1 References
ATA Interface Specification (IBM Form No. SC18-2275-00)
ISO/IEC Draft. ANSI X3.221 (Information Technology AT Attachment Interface for Disk Drive)
 Copyright IBM Corp. 1993
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O E M Functional Specifications for IBM 3.5-Inch Hard Disk Drive
2.0 General Features
The 3.5-Inch hard disk drives consist of the following four models.
H3133−
H3171−
H3256−
H3342−
A2
A2
A3
A4
(133MB,
(171MB,
(256MB,
(342MB,
two R/W heads)
two R/W heads)
three R/W heads)
four R/W heads)
The drives provide the following common features for all models.
Sector format of 512 bytes/sector
Close-loop actuator servo
Dedicated head-landing zone
Automatic actuator lock
Interleave factor 1:1
Three segmented 32KB of buffer implementation with read look-ahead buffer
96KB sector buffer
ECC On The Fly (EOF)
Automatic error recovery procedures for read and write commands
Self diagnostics at power on and resident diagnostics
PIO Data Transfer− Mode 2
 Copyright IBM Corp. 1993
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4
O E M Functional Specifications for IBM 3.5-Inch Hard Disk Drive
3.0 Fixed Disk Subsystem Description
This chapter describes the subsystems.
3.1 Control Electronics
The drive is electronically controlled by an microprocessor, several logic modules, digital/analogue modules,
and various drivers and receivers. The control electronics perform the following major functions.
Controls the power-up sequence and calibrates the servo mechanism.
Monitors various timers for head settle, servo failures, and so on.
Analyzes servo signals to provide closed loop control.
Controls the voice-coil motor driver to position the actuator.
Monitors the actuator position and determines the target track for seek operations.
Constantly monitors error conditions of the servo and takes corresponding action if an error occurs.
Controls starting, stopping, and monitoring of the spindle.
Controls and interprets all interface signals between the host controller and the drive.
Controls read/write accessing of the disk media, including defect management and error recovery.
Performs self-checkout (diagnostics).
3.2 Head Disk Assembly
The head disk assembly (HDA) is assembled in a clean room environment and contains the disk and
actuator assembly. Air is constantly circulated and filtered when the drive is operational. Ventilation of
HDA is accomplished via an absolute breather filter.
The spindle is directly driven by an in-hub, brushless, sensorless DC drive motor. Dynamic braking is used
to quickly stop the spindle.
3.3 Actuator
The read/write heads are mounted in the actuator. The actuator is a swing-arm assembly driven by a voice
coil motor. A closed-loop positioning servo controls the movement of the actuator. An embedded servo
pattern supplies feedback to the positioning servo to keep the read/write heads centered over the desired
track.
The actuator assembly is balanced to allow vertical or horizontal mounting without adjustment.
When the drive is stopped by a power-off condition, the actuator automatically moves the head to a dedicated landing zone outside of the data area, where the actuator is locked.
 Copyright IBM Corp. 1993
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O E M Functional Specifications for IBM 3.5-Inch Hard Disk Drive
4.0 Fixed Disk Characteristics
This chapter provides the characteristics of the fixed disk.
4.1 Formatted Capacity
Description
H3133-A2
H3171-A2
H3256-A3
H3342-A4
Physical Layout
Bytes per sector
512
512
56/84
56/84
Number of heads
2
2
3
4
Number of disks
1
1
2
2
Data sectors per cylinder
112/168
112/168
168/252
224/336
Spare sectors per zone
224/336
224/336
336/504
448/672
620/1140
1280/1140
1280/1140
1280/1140
No. of ID data sectors
69440
143360
215040
286720
No. of OD data sectors
191520
191520
287280
383040
133611520
171458560
257187840
342917120
Number of heads
15
10
16
16
Number of sectors/track
17
34
36
48
1023
984
872
872
260865
334560
502272
669696
133562880
171294720
257163264
342884352
Sectors per track (ID/OD)
Data cylinder
Total data bytes (Note 1)
Logical Layout
512
56/84
512
56/84
(Note 2)
Number of cylinders (Note 3)
No. of sectors
Total logical data bytes
Table 1. Formatted Capacity
Notes:
1. Total data bytes
The maximum physical usable data capacity.
2. Logical layout
Logical layout is a imaginable H D D parameter (number of heads) which is used to access the H D D
from the system interface. Logical layout to physical layout (actual head, sector) translation is done
automatically in the HDD. The default setting can be obtained by issuing the IDENTIFY DRIVE
command.
3. Logical cylinders
This number includes one cylinder which is used for the diagnostic program.
 Copyright IBM Corp. 1993
7
4.2 Data Sheet
Data transfer rates
Buffer to/from media
Host to/from buffer
19.0(ID)/26.4(OD) MB/sec
8.3 MB/sec
Data buffer size
Number of buffer segments
96 KB
3 x 32KB
Rotational speed
Recording density
3600 R P M
55000(ID)/53000(OD) BPI
Track density
2800 TPI
Areal density
154(ID)/148(OD) Mb/sq.in.
Data bands (for ZBR)
Table 2. Data Sheet
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O E M Functional Specifications for IBM 3.5-Inch Hard Disk Drive
2
4.3 Performance Characteristics
The drive performance is characterized by the following parameters:
Command overhead
Mechanical positioning
− Seek time
− Latency
Data transfer speed
Buffering operation (look-ahead)
Note: All of the above parameters contribute to drive performance. Other parameters contribute to the
performance on the actual system. The following specifications define the bare drive characteristics, not the
system throughput which depends on the system and the application.
4.3.1 Command Overhead
Command overhead is defined as the duration:
From the time the command from a host system is written into the command register
To the assertion of D R Q for the first data byte of a READ command when the requested data is not in
the buffer.
but excludes the time required for:
− Physical seek time.
− Latency time.
Read Command Case (Drive is in quiescence state)
Time
Total
Less than 4 msec.
Table 3. Command Overhead
Note: The above table shows the average time and includes the servo interrupt processing time.
4.3.2 Mechanical Positioning
The following tables show the positioning time.
4.3.2.1 Average Seek Time (Including Settling Time)
Command Type
Typical
Max.
Read
14 msec.
15 msec.
Write
16 msec.
17 msec.
Table 4. Mechanical Positioning Performance
“Typical” and “Max” for the performance specifications mean:
Typical
Max
Average of the drives tested at nominal environmental and voltage conditions.
Maximum value measured on any one drive over the full range of the environmental and
voltage conditions.
(See 7.2, “Environment” on page 26 and 7.3, “DC Power
Requirement” on page 27 for ranges.)
Fixed Disk Characteristics
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The seek time is measured from the start of the actuator's motion to the start of a reliable Read/Write operation. Reliable read or write implies that error correction/recovery is not used to correct for arrival problems.
The seek time does not include the “command overhead” described earlier.
4.3.2.2 Full Stroke Seek
Function
Typical
Max.
Read
28 msec.
30 msec.
Write
30 msec.
32 msec.
Table 5. Full Stroke Seek Time
Full stroke seek is measured as the average of 1000 full stroke seeks with a random head switch from both
directions (inward and outward). The full stroke seek time also does not include the command overhead.
4.3.2.3 Average Latency
Rotational speed
Time for a revolution
3600 rpm
16.7 msec.
Average Latency
8.33 msec.
Table 6. Latency Time
4.3.3 Drive Ready Time
Condition
Typical
Power-On to Ready
10 sec.
Max.
31 sec.
Table 7. Drive Ready Time
Legend:
Ready
Power On
The condition in which the drive is able to perform a media access command (for
example read, write) immediately.
This includes the time required for the internal self diagnostics.
4.3.4 Data Transfer Speed
Description
H3171-A2
H3342-A4
Disk-Buffer Transfer (Outer)
(Instantaneous)
(Sustained)
2.5 MB/sec.
2.5 MB/sec.
2.08 MB/sec.
2.17 MB/sec.
1.7 MB/sec.
1.7 MB/sec.
1.39 MB/sec.
1.45 MB/sec.
8.3 MB/sec.
8.3 MB/sec.
Disk-Buffer Transfer (Inner)
(Instantaneous)
(Sustained)
Buffer-Host
Table 8. Data Transfer Speed
Legend:
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O E M Functional Specifications for IBM 3.5-Inch Hard Disk Drive
Instantaneous disk-buffer transfer rate (MB/sec) equals:
(Number of sectors on a track) * 512 * (Revolution/second)
Note: The number of sectors per track will vary because of the linear density recording.
Sustained disk-buffer transfer rate (MB/sec) is defined by considering the head/cylinder change time. This
gives a local average data transfer rate.
(Sustained transfer rate) = A/ ( B + C + D )
A
B
C
D
=
=
=
=
(Number of data sectors per cylinder) * 512
(Number of surface per cylinder) - 1) * (Head switch time)
(Cylinder change time)
(Number of surface) * (One revolution time)
Instantaneous buffer-host transfer rate (MB/sec) defines the maximum data transfer rate on an AT Bus.
It is also dependent on the speed of the host.
4.3.5 Buffering Operation (Look-Ahead)
To improve the total performance, the drive uses its own buffer for look-ahead. 96KB of the buffer is
divided into three segmented blocks; two of the three segments are maintained as independent look-ahead
buffers in least-recently-used fashion and one segment is used for the write buffer.
Fixed Disk Characteristics
11
12
O E M Functional Specifications for IBM 3.5-Inch Hard Disk Drive
5.0 File Organization
5.1 File Format
When the drive is manufactured, the sector continuity in the physical format is maintained by the defect
flagging strategy (described in the following section) to provide maximum performance to users.
5.2 Cylinder Allocation
Logical Cylinder
Block/Track
Microcode
-4/-3
64
Primary map
-2
8
Reserved
-1
64
CE cylinder
0
64
Reserved
1
16
OD data zone
2..1141
84
OD spare cylinder
1142..1443
84
ID data cylinder
1144..2423
56
ID spare cylinder
2424..2425
56
Dummy write
2426
N/A
Table 9. Cylinder Allocation
Microcode cylinder
The microcode cylinders are on cylinders -1 to -4. They contain the down-loaded microcode,
which is loaded when power is turned on to run with the R O M code. Two copies of the same
executable code are written.
Data cylinder
This cylinder contains the user data, which can be sent and retrieved via read/write commands.
Since the drive has two zones, the value of sector-per-track is different between the outer cylinders and the inner cylinders.
Spare cylinder
The spare cylinder includes reassigned data from a defective location. Data from an outer cylinder is reassigned to the OD spare cylinder, and from an inner cylinder to the ID spare cylinder.
Primary map
The primary map is a list of defective areas of the recording surfaces found during the manufacturing process and is used by the drive for formatting.
Dummy write
The dummy write cylinder is allocated for the calibration and extensive error recovery by the
drive.
 Copyright IBM Corp. 1993
13
14
O E M Functional Specifications for IBM 3.5-Inch Hard Disk Drive
6.0 Defect Flagging Strategy
Media defects are remapped to the next available sector during the manufacturing format process.
mapping from LBA to the physical location is calculated with an internally maintained table.
The
6.1 Shipped Format
Data areas are optimally utilized.
Extra sectors are not wasted as a spare throughout the user data areas.
All spare sectors are located on one of four spare tracks spread on the user data area.
All sectors generated by defect flagging are absorbed by the four spare tracks.
Ä Ä ÂÄÄÄÄÄÄÂÄÄÄÄÄÄÂÄÄÄÄÄÄÂÄÄÄÄÄÄÂÄÄÄÄÄÄÂÄÄÄÄÄÄÂ Ä Ä
³ N ³ N+1 ³
³ N+2 ³
³ N+3 ³
³
³
³Defect³
³Defect³
³
Ä Ä ÁÄÄÄÄÄÄÁÄÄÄÄÄÄÁÄÄÄÄÄÄÁÄÄÄÄÄÄÁÄÄÄÄÄÄÁÄÄÄÄÄÄÁ Ä Ä
³
A ³
A
ÀÄÄÄÄÄÄÄÄÄÄÄÄÙ ÀÄÄÄÄÄÄÄÄÄÄÄÄÙ
Skip
Skip
Defects are skipped without any constrain, such as track or cylinder boundaries. The calculation from LBA to physical is done with an internal table.
 Copyright IBM Corp. 1993
15
16
O E M Functional Specifications for IBM 3.5-Inch Hard Disk Drive
7.0 Specification
This chapter provides specifications of the drives.
7.1 Electrical Interface Specifications
This section provides the interface specifications.
7.1.1 Connectors
Refer to Appendix B for location of the connectors.
7.1.1.1 Power
The DC power connector is designed to mate with AMP (part 1-480424-0) using AMP pins (part 350078-4)
strip or (part 61173-4) loose piece, or their equivalents. Pin assignments are shown in Table 10.
Pin
1
2
3
4
Voltage
+ 12 V
GND
GND
+ 5V
Table 10. Power Connector Pin Assignments
7.1.1.2 Alternate Power
The 3-pin DC power connector is designed to mate with the MOLEX (5480-03) using MOLEX pins (5479)
or their equivalents. The pin assignments are shown in Table 11.
Each line is connected to the corresponding voltage lines of the power connector as shown in Table 10.
Pin
1
2
3
Voltage
+ 5V
+ 12 V
GND
Table 11. Alternate Power Connector Pin Assignments
7.1.1.3 AT Signal Connector
The AT signal connector is a 40-pin connector.
 Copyright IBM Corp. 1993
17
7.1.2 Signal Definitions
The pin assignments of interface signals are shown in Figure 1.
ÚÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄ¿
³ PIN ³ SIGNAL ³ I/O ³ Type ³ PIN ³ SIGNAL ³ I/O ³ Type
³
ÃÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄ´
³ 01 ³ ÄHRESET ³ I ³ TTL
³ 02 ³ GND
³
³
³
³ 03 ³ HD07
³ I/O ³ 3Ästate ³ 04 ³ HD08
³ I/O ³ 3Ästate
³
³ 05 ³ HD06
³ I/O ³ 3Ästate ³ 06 ³ HD09
³ I/O ³ 3Ästate
³
³ 07 ³ HD05
³ I/O ³ 3Ästate ³ 08 ³ HD10
³ I/O ³ 3Ästate
³
³ 09 ³ HD04
³ I/O ³ 3Ästate ³ 10 ³ HD11
³ I/O ³ 3Ästate
³
³ 11 ³ HD03
³ I/O ³ 3Ästate ³ 12 ³ HD12
³ I/O ³ 3Ästate
³
³ 13 ³ HD02
³ I/O ³ 3Ästate ³ 14 ³ HD13
³ I/O ³ 3Ästate
³
³ 15 ³ HD01
³ I/O ³ 3Ästate ³ 16 ³ HD14
³ I/O ³ 3Ästate
³
³ 17 ³ HD00
³ I/O ³ 3Ästate ³ 18 ³ HD15
³ I/O ³ 3Ästate
³
³ 19 ³ GND
³
³
³ (20)³ Key
³
³
³
³ 21 ³ (Resv) ³
³
³ 22 ³ GND
³
³
³
³ 23 ³ ÄHIOW
³ I ³ TTL ³ 24 ³ GND
³
³
³
³ 25 ³ ÄHIOR
³ I ³ TTL ³ 26 ³ GND
³
³
³
³ 27 ³ (Resv) ³
³
³ 28 ³ CSEL
³ I ³ TTL
³
³ 29 ³ (Resv) ³
³
³ 30 ³ GND
³
³
³
³ 31 ³ HIRQ
³ O ³ 3Ästate ³ 32 ³ ÄHIOCS16 ³ O ³ OC
³
³ 33 ³ HA01
³ I ³ TTL ³ 34 ³ ÄPDIAG
³ I/O ³ OC
³
³ 35 ³ HA00
³ I ³ TTL ³ 36 ³ HA02
³ I ³ TTL
³
³ 37 ³ ÄHCS0
³ I ³ TTL ³ 38 ³ ÄHCS1
³ I ³ TTL
³
³ 39 ³ ÄDASP
³ I/O ³ OC
³ 40 ³ GND
³
³
³
ÀÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÙ
Figure 1. Interface Signal Pin Assignments
Legend
O
I
I/O
OC
Resv
TTL
Meaning
Output from a drive.
Input to a drive.
Common input/output.
Open-collector or open-drain output.
Reserved pin; the pin has no connection.
Transistor transistor logic.
HD00-HD15
A 16-bit, bi-directional data bus between the host and the HDD. HD00 through HD07 are
used for register and ECC access. HD00 through HD15 are used for data transfer. These
signal lines are three-state lines and have a 24 mA current sink capability.
HA00-HA02
The address used to select the individual register in the HDD.
− HCS0
A chip select signal generated from the host address bus. When active, one of the command
block registers (data; error; features when written, sector count; sector number; cylinder low,
cylinder high, drive/head and status; command when written, registers) can be selected. (See
Figure 4 on page 22.)
− HCS1
A chip select signal generated from the host address bus. When active, one of the control
block registers (alternate status, device control when written, and drive address registers) can
be selected. (See Figure 4 on page 22.)
− HRESET
This line is used to reset the HDD. It is kept in a low logic state when power is turned on
and is kept in a high logic state after power is turned on.
− HIOW
The rise of this line gates data from the data bus to a register or data register of the HDD.
− HIOR
When in a low state, this signal gates data from a register or data register of the drive onto
the data bus. The data on the bus are latched on the rise of − HIOR.
18
O E M Functional Specifications for IBM 3.5-Inch Hard Disk Drive
HIRQ
The interrupt is active only when the drive is selected and the host activates the − IEN bit in
the device control register. At all other times, this signal is in a high impedance state
irregardless of the state of the IRQ bit. The interrupt is set when the IRQ bit is set by the
drive CPU. IRQ is reset to zero by a host read of the status register or a write to the
command register. This signal is a three-state line with a 24 mA sink capability.
− HIOCS16
This indicates to the host that a 16-bit data register has been addressed and that the drive is
prepared to send or receive a 16-bit data word. This signal is an open-drain output with a
24 mA sink capability. An external resistor is needed to pull this line to + 5 Volt.
− DASP
This is a time-multiplexed signal which indicates that a drive is active, or that drive 1 is
present. This signal is driven by a open-drain driver and internally pulled-up to + 5 Volt
through a 10 kilohm resistor.
During power-on initialization or after − HRESET is negated, − DASP is asserted by drive
1 within 400 milliseconds to indicate that drive 1 is present. Drive 0 allows up to 450 milliseconds for drive 1 to assert − DASP. If drive 1 is not present, drive 0 may assert − DASP
to drive a LED indicator.
− DASP is negated following the acceptance of the first valid command by drive 1.
Anytime after − DASP is negated, either drive may assert − DASP to indicate that a drive is
active.
− PDIAG
This signal is asserted by drive 1 to indicate to drive 0 that it has completed its diagnostic
tests. This line is pulled-up to + 5 Volt in the H D D through a 10 kilohm resistor.
After a power-on-reset, a software reset, or − HRESET, drive 1 negates − PDIAG within 1
millisecond (to indicate to drive 0 that it is busy). Drive 1 then asserts − PDIAG within 30
seconds to indicate that it is no longer busy, and is able to provide status.
After the receipt of a valid Execute Drive Diagnostics command, drive 1 negates − PDIAG
within 1 millisecond to indicate to drive 0 that it is busy and has not yet passed its drive
diagnostics. If drive 1 is present, then drive 0 waits for up to five seconds from the receipt of
a valid Execute Drive Diagnostics command for drive 1 to assert − PDIAG. Drive 1 should
clear BSY before asserting − PDIAG, because − PDIAG is used to indicate that drive 1 has
passed its diagnostic tests and is ready to post status.
If − DASP is not asserted by drive 1 during the reset initialization, drive 0 posts its own
status immediately after it completes its diagnostic tests, and sets the drive 1 status register to
00h. Drive 0 may be unable to accept commands until it has finished its reset procedure and
is ready (DRDY equals 1).
CSEL (Cable Select) (Optional)
The drive is configured as either drive 0 or 1 depending on the value of CSEL.
If CSEL is grounded, the drive address is 0.
If CSEL is open, the drive address is 1.
KEY
Pin 20 does not exist. The corresponding female side should be blocked out to prevent
incorrect insertion of the connector.
Note: IORDY (Pin 20: I/O channel ready) is not supported.
Specification
19
7.1.3 Interface Logic Signal Levels
The interface logic signals have the following electrical specifications:
Inputs:
Input High Voltage
Input Low Voltage
Ä
Ä
2.0 V min.
0.8 V max.
Outputs:
Output High Voltage
Output Low Voltage
Ä
Ä
2.4 V min.
0.5 V max.
7.1.4 Reset Timings
The H D D reset timing is shown below.
ÄHRESET
BUSY
ÄÄÄÄÄÄ¿
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³
³
ÀÄÄÄÄÄÄÄÄÄÄÙ
³IÄÄ T0 ÄÄH³
³
³
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XXXXXXX
³
³
³
ÀÄÄÄÄÄÄÄÄÄÄÄÄ
³IÄÄÄÄÄÄÄ T1 ÄÄÄÄÄÄÄÄH
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³
³ PARAMETER DESCRIPTION
³ Min. ³ Typ. ³ Max.³
³
³
³(usec)³(sec) ³(sec)³
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³ T0 ³ ÄHRESET low width
³ 25 ³
³
³
ÃÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÅÄÄÄÄÄÄÅÄÄÄÄÄ´
³ T1 ³ ÄHRESET high to
Not BUSY
³ ÄÄ ³ 6 ³ 18 ³
ÀÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÁÄÄÄÄÄÄÁÄÄÄÄÄÙ
Figure 2. System Reset Timing
20
O E M Functional Specifications for IBM 3.5-Inch Hard Disk Drive
7.1.5 PIO Timings
The PIO cycle timings meet the Mode 2 specification of the ATA description.
ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
ÄHCS0,ÄHCS1 ÄÄÄÄÄÄÄÄ´
ÃÄÄÄÄÄÄÄÄÄÄÄÄ
+HA0Ä2
ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
³
³IÄÄT9ÄÄH³
³IÄÄT1ÄH³IÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄT0ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄH³
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
ÄHIOR,ÄHIOW
³
³
³
³
³
³
ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
³
ÀÄÄÄÄÄÄ
³
³IÄÄÄÄÄÄÄÄÄÄT2ÄÄÄÄÄÄÄÄÄÄH³
³
³
³
³
³
³
³
ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿ ³
Write data
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
+HD00Ä15
³
³
ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ ³
³
³
³IÄÄÄÄÄT3ÄÄÄÄH³IÄT4ÄH³ ³
³
³
³
³
³
³
ÚÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
³
Read data
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
+HD00Ä15
³
³
ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
³
³
³IÄÄÄÄÄT5ÄÄÄÄH³
ÄH³T6³IÄ ³
ÄH³ T7 ³IÄ
ÄH³T8³IÄ
ÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
ÚÄÄÄÄÄÄÄÄÄ
ÄHIOCS16
³
³
ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
ÚÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÂÄÄÄÄÄÄÂÄÄÄÄÄ¿
³
³ PARAMETER DESCRIPTION
³ MIN ³ MAX ³Note ³
³
³
³(nsec)³(nsec)³
³
ÃÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÅÄÄÄÄÄÄÅÄÄÄÄÄ´
³
³
³
³
³
³
³ T0 ³ Cycle time
³ 240 ³
Ä ³ 1 ³
³ T1 ³ ÄHCS0Ä1, +HA00Ä02 valid to ÄHIOR,ÄHIOW active ³
30 ³
Ä ³
³
³ T2 ³ ÄHIOR,ÄHIOW pulse width
³ 100 ³
Ä ³
³
³ T3 ³ +HD00Ä15 setup to ÄHIOW high
³ 30 ³
Ä ³
³
³ T4 ³ ÄHIOW high to +HD00Ä15 hold
³
15 ³
Ä ³
³
³ T5 ³ ÄHIOR low to +HD00Ä15 valid
³
Ä ³ 60 ³
³
³ T6 ³ ÄHIOR high to +HD00Ä15 hold
³
5 ³
Ä ³
³
³ T7 ³ ÄHCS0Ä1, +HA00Ä02 valid to ÄHIOCS16 assertion ³
Ä ³ 40 ³
³
³ T8 ³ ÄHCS0Ä1, +HA00Ä02 invalid to ÄHIOCS16 negation ³
Ä ³ 30 ³
³
³ T9 ³ ÄHIOR,ÄHIOW high to ÄHCS0Ä1, +HA00Ä02 hold
³
10 ³
³
³
³
³
³
³
³
³
ÀÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÁÄÄÄÄÄÄÁÄÄÄÄÄÙ
Note 1: The drives do not support less than 240 nsec of cycle time.
Figure 3. PIO Cycle Timings
Specification
21
7.1.6 Addressing of HDD Registers
The host addresses the drive through task file registers. These registers are mapped into the host's I/O space.
Two chip select lines (− HCS0 and − HCS1) and three address lines (HA00-02) are used to select one of
these registers, while a − HIOR or − HIOW is provided at the specified time.
The − HCS0 is used to address command block registers, while the − HCS1 is used to address the control
block registers. The following table shows the I/O address map.
ÚÄÄÄÄÄÂÄÄÄÄÂÄÄÄÄÂÄÄÄÂÄÄÄÂÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
³Addr.³ÄCS0³ÄCS1³HA2³HA1³HA0³ ÄIOR = 0 (Read) ³ ÄIOW = 0 (Write)
³
ÃÄÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÅÄÄÄÅÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
³
³
³
³ ³ ³ ³ Command Block Registers
³
ÃÄÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÅÄÄÄÅÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
³ 1F0 ³ 0 ³ 1 ³ 0 ³ 0 ³ 0 ³ Data
³ Data
³
³ 1F1 ³ 0 ³ 1 ³ 0 ³ 0 ³ 1 ³ Error
³ Features
³
³ 1F2 ³ 0 ³ 1 ³ 0 ³ 1 ³ 0 ³ Sector count
³ Sector count
³
³ 1F3 ³ 0 ³ 1 ³ 0 ³ 1 ³ 1 ³ Sector number
³ Sector number
³
³ 1F4 ³ 0 ³ 1 ³ 1 ³ 0 ³ 0 ³ Cylinder low
³ Cylinder low
³
³ 1F5 ³ 0 ³ 1 ³ 1 ³ 0 ³ 1 ³ Cylinder high
³ Cylinder high
³
³ 1F6 ³ 0 ³ 1 ³ 1 ³ 1 ³ 0 ³ Drive/Head
³ Drive/Head
³
³ 1F7 ³ 0 ³ 1 ³ 1 ³ 1 ³ 1 ³ Status
³ Command
³
ÃÄÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÅÄÄÄÅÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
³
³
³
³ ³ ³ ³ Control Block Registers
³
ÃÄÄÄÄÄÅÄÄÄÄÅÄÄÄÄÅÄÄÄÅÄÄÄÅÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
³ 3F6 ³ 1 ³ 0 ³ 1 ³ 1 ³ 0 ³ Alt. Status
³ Device control
³
³ 3F7 ³ 1 ³ 0 ³ 1 ³ 1 ³ 1 ³ Drive address
³
Ä
³
ÀÄÄÄÄÄÁÄÄÄÄÁÄÄÄÄÁÄÄÄÁÄÄÄÁÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
Figure 4. Task File
Note: The “Addr.” field in the figure is shown only an example.
7.1.7 Cabling
The maximum cable length from the host system to the HDD, plus the circuit pattern length in the host
system, cannot exceed 45.7 cm.
22
O E M Functional Specifications for IBM 3.5-Inch Hard Disk Drive
7.1.8 Jumper Settings
The seven-position jumper block shown below is used to select the master or slave, the cable selection, and
the LED output port.
Pin pitch is 2 mm.
JP1
Master
ON
JP2
Slave
ON
ÚÄÄÄ¿
³ 1 ³
ÀÄÄÄÙ
ÚÄÄÄ¿
³ 3 ³
ÀÄÄÄÙ
ÚÄÄÄ¿
ÚÄÄÄ¿
JP3
Cable Sel
ON
JP4
NC
JP5
NC
JP6
NC
JP7
LED
ÚÄÄÄ¿
ÚÄÄÄ¿
ÚÄÄÄ¿
ÚÄÄÄ¿
ÚÄÄÄ¿
ÚÄÄÄ¿
³ 5 ³
ÀÄÄÄÙ
ÚÄÄÄ¿
³ 7 ³
ÀÄÄÄÙ
ÚÄÄÄ¿
³ 9 ³
ÀÄÄÄÙ
ÚÄÄÄ¿
³ 11³
ÀÄÄÄÙ
ÚÄÄÄ¿
³ 13³
ÀÄÄÄÙ
ÚÄÄÄ¿
ÚÄÄÄ¿
ÚÄÄÄ¿
ÚÄÄÄ¿
ÚÄÄÄ¿
ÚÄÄÄ¿
³ 2 ³
³ 4 ³
³ 6 ³
³ 8 ³
³ 10³
³ 14³
ÀÄÄÄÙ
ÀÄÄÄÙ
ÀÄÄÄÙ
ÀÄÄÄÙ
ÀÄÄÄÙ
ÀÄÄÄÙ
/ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ/
Raw Card
/ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ/
Figure 5. Jumper Pins
Notes:
1. The JP1, JP2, and JP3 jumper positions should not be selected concurrently.
2. JP1 is the position for master, JP2 is for slave, and JP3 is for the cable selection mode.
3. To enable the CSEL mode (cable selection mode), the JP3 jumper must be installed. In the CSEL
mode, the drive address is determined as follows:
When CSEL is grounded or at a low level, the drive address is 0 (Master).
When CSEL is open or at a high level, the drive address is 1 (Slave).
The CSEL signal, ATA interface pin 28, is controlled by the host system.
4. JP7 is the position for an external LED.
Specification
23
7.1.8.1 The Jumper Pin Assignments
ÚÄÄÄÄÄÂÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
³ JP ³Pin No.³ Status ³
Description
³ Signal Name ³
ÃÄÄÄÄÄÅÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
³ 1 ³
1 ³
ÄÄ
³ GND
³
³
³
ÃÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
³
³
2 ³
In
³ ÄDevice Address Select Line
³ ÄC/+D
³
ÃÄÄÄÄÄÅÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
³ 2 ³
3 ³
ÄÄ
³ NC (Slave position)
³
³
³
ÃÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
³
³
4 ³
ÄÄ
³ NC
³
³
ÃÄÄÄÄÄÅÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
³ 3 ³
5 ³
In
³ Cable Selection (Pin 28)
³
³
³
ÃÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
³
³
6 ³
In
³ ÄDevice Address Select Line
³ ÄC/+D
³
ÃÄÄÄÄÄÅÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
³ 4 ³
7 ³
ÄÄ
³ NC
³
³
³
ÃÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
³
³
8 ³
ÄÄ
³ NC
³
³
ÃÄÄÄÄÄÅÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
³ 5 ³
9 ³
ÄÄ
³ NC
³
³
³
ÃÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
³
³ 10 ³ ÄÄ
³ NC
³
³
ÃÄÄÄÄÄÅÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
³ 6 ³
11 ³
ÄÄ
³ NC
³
³
³
ÃÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
³
³ 12 ³ ÄÄ
³ NC
³
³
ÃÄÄÄÄÄÅÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
³ 7 ³
13 ³ Out
³ +LED
³ +LED
³
³
ÃÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
³
³ 14 ³ Out
³ ÄLED
³ ÄLED
³
ÀÄÄÄÄÄÁÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
Figure 6. Jumper Pin Assignments
7.1.8.2 Signal Description
In Figure 7 on page 25, “on” means a shunt jumper is installed, and “off” means the shunt jumper is not
installed.
LED output ( + L E D pin 13)
This pin has a maximum current source capability of + 1 8 mA at a nominal condition. This pin is
designed to drive an LED.
LED output (− LED pin 14)
This pin has a current sink capability of − 100 mA at 0.25 V for the worst case. This pin is designed to
drive an LED.
24
O E M Functional Specifications for IBM 3.5-Inch Hard Disk Drive
7.1.8.3 Shipping Default Condition
The jumper is set to “Device ID = Master” when the drive is shipped.
1Ä2
3Ä4 5Ä6
8
9Ä10 11Ä12 13Ä14
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
on
off
off
off
off
off
off
³
³
³
ÀÄÄÄÄÄ
³
³
³
³
³
ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
³
³
³
ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
³
ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
No LED load
Cable selection (28PIN)
Device ID = Slave
Device ID = Master
Figure 7. Jumper Default Condition
7.1.8.4 Jumper Location
The jumper location on the card is shown in Figure 8.
ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
ÚÁÄ¿ÄÄÄÄÄ¿
³
³ ³
ÚÁ¿ IÄÄ JP7
³
³ ³
³ ³
³
AT I/F ³ ³
³ ³
Back Side of Drive ³
Connector ³
ÀÂÙ IÄÄ JP1
³
³ ³
ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
³
³ ³
³
³
³ ³
³
³
³ ³
Logic Card
³
³
³ ³
³
³
³ ³
³
³
ÀÂÄÙ ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
³
ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
Figure 8. Jumper Location
Specification
25
7.2 Environment
The following environmental conditions should be maintained for drive operation.
7.2.1 Temperature and Humidity
Operating Conditions
Temperature
Relative Humidity
Maximum Wet Bulb Temperature
Maximum Temperature Gradient
Altitude
5 to 55˚ C (See note)
8 to 90 % non-condensing
29.4˚ C non-condensing
15˚ C / hour
-300 to 3,000 m
Shipping Conditions
Temperature
Relative Humidity
Maximum Wet Bulb Temperature
Altitude
-40 to 65˚ C
5 to 95 % non-condensing
35˚ C non-condensing
-300 to 12,000 m
Storage Conditions
Temperature
Relative Humidity
Maximum Wet Bulb Temperature
Altitude
0 to 65˚ C
5 to 95 % non-condensing
35˚ C non-condensing
-300 to 12,000 m
Note:
The system has to provide sufficient air movement to maintain a surface temperature below 60˚ C at the
center of the top cover of the drive.
7.2.2 Corrosion Test
The hard disk drive must not show any signs of corrosion, (inside and outside of the HDA) and be functional after being subjected to seven days of a 50˚ C temperature with a 90 % relative humidity.
26
O E M Functional Specifications for IBM 3.5-Inch Hard Disk Drive
7.3 DC Power Requirement
The following voltage specifications apply when measured at the drive power connector. Damage to the
electronic circuits of the drive may result if the power supply cable is connected or disconnected while power
is applied to the drive (hot plug/unplug is not allowed). There are inductive loads in the drive which can
cause high voltage spikes on the drive if the power connection is opened. There is no special power on/off
sequencing required.
Input Voltage
+5 Volts Supply
+12 Volts Supply
5V (+/Ä 5% during run and spin up)
12V (+10%,Ä8% during run and spin up)
Power Supply Current
+5 Volts
+12 Volts
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
(All values in amperes)
Pop Mean
Std. Dev
Pop Mean
Std. Dev
0.16
0.15
N/A
0.30
0.50
0.46
0.37
0.02
0.02
N/A
0.02
0.02
0.02
0.02
0.14
0.13
0.54
0.20
1.10
0.54
0.25
0.02
0.02
0.03
0.02
0.03
0.03
0.02
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
Idle average
Idle ripple(peakÄtoÄpeak)
Seek peak
Seek average
Start up(max)
RND R/W peak
RND R/W average
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
The power supply generated ripple as seen at the drive power connector is:
Maximum
Notes
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
+5 V DC
100 mV pp
0Ä10 MHz
+12 V DC
150 mV pp
0Ä10 MHz
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
During drive start up and seek, a 12 volt ripple is generated by the drive (referred to as dynamic loading). If
several drives have their power daisy chained together, then the power supply ripple plus other drive's
dynamic loading must remain within the regulation tolerance of + 1 0 / - 8 % . A common power supply with
separate power leads to each drive is a more desirable method of power distribution.
To prevent external electrical noise from interfering with the drive's performance, the drive must be secured
with four screws in the user system frame which has no voltage differences at the four screw positions, and
has less than + / - 3 0 0 millivolts peak to peak level difference to the ground lead of the power connector.
Specification
27
7.4 Reliability
This section provides the reliability data for the drives.
7.4.1 Data Integrity
No more than one sector can be lost at a hard reset or power loss condition during a write operation.
7.4.2 Cable Noise Interference
To avoid any degradation of performance throughput or error rate when the interface cable is routed on top
or comes in contact with the HDA assembly, the drive must be grounded electrically to the system frame by
four screws. The common mode noise or voltage level difference between the system frame and power cable
ground or AT interface cable ground should be in the allowable level specified in the power requirement
section.
7.4.3 Mean Time Between Failures (MTBF)
The M T B F is 250,000 power-on hours (POH).
7.4.4 Usage
The drive withstands 720 P O H per month (43200 P O H for 5 years), with 50 on/off cycles per month and a
drive access (seek/read/write operation) rate of 20% of power on time. The fixed disk subsystem meets the
maximum failure rate described in the reliability section.
7.4.5 Contact Start Stop (CSS)
The drive withstands a minimum of 20,000 contact start/stop cycles under the 40˚ C environment.
7.4.6 Useful Life
The useful life of the drives is a minimum of five years.
7.4.7 Preventive Maintenance
None.
28
O E M Functional Specifications for IBM 3.5-Inch Hard Disk Drive
7.4.8 Data Reliability
Probability of not recovering data ....... 1 in 10E13 bits read
ECC implementation
A Read Solomon Error Correcting Code of degree 8 with non-interleaved is used to cover the data fields.
The ECC polynomial is derived from:
g(X) = (X + 1)(X + A)(X + A**2)
Ä Ä Ä (X + A**7)
ECC On The Fly covers one or two symbols of error in one sector. (1 symbol = 10 bits)
7.4.9 Seek/ID Mis-Compare Errors
A non-recoverable seek/ID mis-compare error is defined as a seek operation that cannot be corrected by the
fixed disk error recovery procedure. Seek errors occurring for field format operations are considered to be
non-recoverable.
No drive has more than one non-recoverable seek/ID mis-compare error per 5 million seek operations (1 in
5 x 10E6) when operated at the full range of voltage and environmental conditions.
7.4.10 Equipment Errors
A recoverable equipment error is any error other than a seek/ID mis-compare error or read error that is
detected and corrected by the drive error recovery procedure. Examples are write fault, drive not ready and
internal drive errors.
No drive has more than one recoverable equipment error per 10E8 bits reads, 10E6 bits writes, or 10E6 seeks
operations when operated at the full range of voltage and environmental conditions.
Specification
29
7.5 Mechanical Specifications
This section provides the mechanical specifications of the drives.
7.5.1 Physical Dimensions
The following chart describes the dimensions for the IBM-H3xxx-Ax hard disk drive form factor.
Appendix B.)
Dimension
Value (mm)
Height
25.4 ± 0.4
Width
101.6 ± 0.4
Length
146.0 ± 0.6
Weight
480 gram (maximum)
(See
7.5.2 Mounting Holes
The mounting hole location and size for the hard disk drive is shown below. For the details, see Appendix
B.
ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
↓ ³
³
ÄÄÄÄ ³
Side View
(4)↑
Bottom View
³ (5) ³
³
³
³IÄÄÄH³IÄÄÄÄ(6)ÄÄÄÄÄH³IÄÄÄ(7)ÄÄÄÄH³
↑
³
I/F connector
³
ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿ ↓
ÄÄÄÄ ³
↑ ³
³ ³
³ ³
³ ³
³ ³
³ ³
(3) ³
³ ³
³ ³
³ ³
³ ³
³ ³
↓ ³
³ ³
ÄÄÄÄ ³
(1)ÄÄÄÄH³IÄÄÄÄ(2)ÄÄÄÄÄH³
Table 12. Hole Locations
Thread
(1)
(2)
(3)
(4)
(5)
(6)
(7)
6-32 U N C
60.3
44.45
95.25
6.35
16.0
60.0
41.6
30
O E M Functional Specifications for IBM 3.5-Inch Hard Disk Drive
7.5.3 Connector and Jumper Description
Refer to Appendix B for locations of the interface connector and the jumpers.
7.5.4 Drive Mounting
The drive functions in all axes (6 directions). Performance and error rate stay within specification limits even
if the drive is operated in other orientations from which it was formatted.
For reliable operation, it is recommended to mount the drive in the system securely enough to prevent excessive motion or vibration of the drive during seek operation or spindle rotation, using appropriate screws or
equivalent mounting hardware. Consult with the issuer of this specification for the actual application, if
necessary.
The drive level vibration test and the shock test are to be conducted when the drive is mounted to a table
using the bottom four screws.
7.5.5 Shipping Zone and Lock
A dedicated “shipping” (or “landing”) zone on the disk, not on the data area of the disk, is provided to
protect the disk data during shipping, movement, or storage. At power down, the heads are automatically
parked and a head locking mechanism secures the heads in this zone.
Specification
31
7.6 Vibration and Shock
All vibration and shock measurements in this section are for the disk drive without the mounting attachments for the systems. The input level is applied to the normal drive mounting points.
7.6.1 Operating Vibration
7.6.1.1 Random Vibration
The hard disk drive meets IBM Standard C-S 1-9711-002 (1990-03) for the V5L product classification.
The test is 30 minutes of random vibration using the power spectral density (PSD) levels shown below in
each of three mutually perpendicular axes. The disk drive will operate without non-recoverable errors or
degradation in throughput more than 5 % when subjected to the below random vibration levels.
Table 13. Random Vibration PSD Profile Breakpoints (Operating)
5
17
45
48
62
65
150
200
500
Hz
0.02
1.1
1.1
8.0
8.0
1.0
1.0
0.5
0.5
×10-³ G ² /Hz
Note: Overall RMS (root mean square) level of vibration is 0.67 G rms.
7.6.1.2 Swept Sine Vibration
The hard disk drive will meet the criteria shown below while operating in the respective conditions.
No errors
0.5 G 0-peak, 5-300-5 Hz sine wave, 0.5 oct/min sweep rate
with 3 minutes dwells at 2 major resonances
No data loss
1 G 0-peak, 5-300-5 Hz sine wave, 0.5 oct/min sweep rate
with 3 minutes dwells at 2 major resonances
7.6.2 Non-Operating Vibration
The disk drive does not sustain permanent hardware damage or loss of previously recorded data after being
subjected to the environment described below.
7.6.2.1 Random Vibration
The test consists of a random vibration applied in each of three mutually perpendicular axes with the time
duration of 10 minutes per axis. The PSD levels for the test simulating the shipping and relocation environment are shown below. (IBM STD C-H 1-9711-005)
Table 14. Random Vibration PSD Profile Breakpoints (Non-operating)
2
4
8
40
55
70
200
Hz
0.001
0.03
0.03
0.003
0.01
0.01
0.001
G ² /Hz
Note: Overall RMS (root mean square) level of vibration is 1.04 G rms.
32
O E M Functional Specifications for IBM 3.5-Inch Hard Disk Drive
7.6.2.2 Swept Sine Vibration
2 G 0-peak, 5-500-5 Hz sine wave
0.5 oct/min sweep rate
Three minute dwells at two major resonances
7.6.3 Operating Shock
The hard disk drive meets IBM Standard C-S 1-9711-007 for the S5 product classification.
The hard disk drive meets the following criteria while operating in the respective conditions described below.
The shock test consists of ten shocks inputs in each axis and direction for total of 60. There must be a delay
between shock pulses, long enough to allow the drive to complete all necessary error recovery procedures.
No errors
5 G, 11 ms half-sine shock pulse
No data loss, seek errors or permanent damage
10 G, 11 ms half-sine shock pulse
No data loss or permanent damage
15 G, 5 ms half-sine shock pulse
30 G, 4 ms half-sine shock pulse
7.6.4 Non-Operating shock
The drive will operate with no degradation of performance or permanent damage after subjected to shock
pulses with the following characteristics.
7.6.4.1 Trapezoidal shock wave
Approximate square (trapezoidal) pulse shape.
Approximate rise and fall time of pulse = 1 ms.
Averaged acceleration level = 50 G.
(Averaged response curve value during the time following the 1 ms rise
time and before the 1 ms fall with a time “duration of 11 msec”.)
Minimum velocity change = 4.23 meters/sec
7.6.4.2 Sinusoidal shock wave
Approximate half-sine pulse shape.
Maximum acceleration level = 75 G.
Shock duration = 11 msec.
All shock input shall be applied to the drive's three mutually perpendicular axes. The heads are not displaced from the landing zone as a result of this test.
Specification
33
7.7 Acoustics
7.7.1 Sound Power
7.7.1.1 Unit Sound Power Level Testing
Sound power emission levels are measured according to ISO 7779. The statistical upper limit of the
A-weighted sound power levels given in Bels relative to 1 pico Watt are shown in the following table.
Mode
Statistical upper limit
Idle
4.5 Bels
Operating
4.8 Bels
Table 15. A-weighted Sound Power Level
Mode definition
Idle mode
Power on, disks spinning, track following, unit ready to receive and respond to interface commands.
Operating mode
Continuous random cylinder selection and seek operation of the actuator with a dwell time at
each cylinder. Seek rate for the drive can be calculated as shown below.
Dwell time = (0.5 + N) × 60/RPM
Seek rate = 1 / (Average seek time + Dwell time)
where N = number of maximum data surfaces ( N = 4 for H3342-A4)
7.7.1.2 Sound Power Acceptance Criteria
Statistical upper limit (L WAu )stat is calculated with the following formula.
(L WAu )stat = (L WAu )m + k × (st)WAu
where:
(L WAu )m
(st)WAu
(sR )W
(sP )WAu
k
is the mean value of the A-weighted sound power level for samples of N drives.
is the total standard deviation for A-weighted sound power level
(st)WAu = SQRT( (sR )W ² + (sP )WAu ² )
is the standard deviation of reproducibility for sound power level.
Assume (sR )W = 0.075 B.
is the standard deviation of the samples for A-weighted sound power level.
is a coefficient determined by number of samples (N) as shown below.
N
3
4
5
6
7
8
9
10
11
12
13
14
15
k
3.19
2.74
2.74
2.49
2.33
2.22
2.13
2.07
2.01
1.97
1.93
1.90
1.87
34
O E M Functional Specifications for IBM 3.5-Inch Hard Disk Drive
7.8 Identification
7.8.1 Labels
The following labels are affixed to every hard disk drive shipped from the drive manufacturing location in
accordance with appropriate hard disk drive assembly drawing.
A label containing the IBM logo, IBM part number and the statement “Made by IBM Japan Ltd.”.
A label containing the drive model number, date code, formatted capacity, place of manufacture, and
UL/CSA/TUV logos.
A bar code label containing the drive serial number.
An user designed label per agreement.
The labels may be integrated with the other labels.
7.9 Safety
7.9.1 Underwriters Lab (UL) Approval
The product is recognized for use in Information Processing and Business Equipment according to UL 1950.
The UL Recognition will be maintained for the life of the product. Vendor/manufacturer marking for UL
approval appears on the drive.
7.9.2 Canadian Standards Authority (CSA) Approval
The product is certified for use in Information Processing and Business Equipment according to the following CSA standards.
C22.2 No. 0-M1989
C22.2 No. 0.4-M1982
C22.2 No. 950-M1989
The CSA Certification will be maintained for the life of the product. Vendor/manufacturer marking for the
CSA certification appears on the drive.
7.9.3 IEC Compliance
The product is certified for compliance to IEC 380, IEC 435, and IEC 950. The product will comply with
these IEC requirements for the life of the product.
7.9.4 Flammability
Printed circuit boards used in this product is made of material with a UL recognized flammability rating of
V-1 or better. The flammability rating is marked or etched on the board. All other parts not considered
electrical components are made of material with a UL recognized flammability rating of V-1 or better.
However, small mechanical parts such as cable ties, washers, screws, and PC board mounts may be made of
material with a UL recognized flammability rating of V-2.
7.9.5 Safe Handling
The product is conditioned for safe handling in regards to sharp edges and corners.
Specification
35
7.9.6 Environment
The product does not contain any known or suspected carcinogens.
Environmental controls meet or exceed all applicable government regulations in the country of origin. Safe
chemical usage and manufacturing control are used to protect the environment. An environmental impact
assessment has been done on the manufacturing process used to build the drive, the drive itself and the disposal of the drive at the end of its life.
Production also meets the requirements of the international treaty on chloroflurocarbon (CFC) control
known as the United Nations Environment Program Montreal Protocol, and as ratified by the member
nations. Material to be controlled include CFC-11, CFC-12, CFC-113, CFC-114, CFC-115, Halon 1211,
Halon 1301 and Halon 2402. Although not specified by the Protocol, CFC-112 is also controlled. In addition to the Protocol IBM requires the following:
All packaging used for the shipment of the product do not use controlled CFCs in the manufacturing
process.
All manufacturing processes for parts or assemblies include printed circuit boards, do not use controlled
CFC materials after May 15, 1993.
7.9.7 Secondary Circuit Protection
Fuses are provided in both 5V and 12V input of the hard disk drive for over current protection.
7.10 Electromagnetic Compatibility
The hard disk drive, when installed in the host system and exercised with a random accessing routine at
maximum data rate meets the following worldwide EMC requirements:
United States Federal Communications Commission (FCC) Rules and Regulations (Class B), Part 15.
IBM Corporate Standard (A 6 dB buffer shall be maintained on the emission requirements).
European Economic Community (EEC) directive number 76/889 related to the control of radio frequency interference and the Verband Deutscher Elektrotechniker (VDE) requirements of Germany
(GOP).
36
O E M Functional Specifications for IBM 3.5-Inch Hard Disk Drive
Appendix A. Test Points
The drive provides access to certain electrical signals to facilitate manufacturing and verification tests.
A.1 R/W Channel
A.1.1 Analog
1. Read Data
Read data is a differential signal that has been amplified and filtered and represents the signal being read
by whatever head is currently selected. The filtration is bandwidth limiting only, not differentiation.
The signal does not have any Automatic Gain Control (AGC).
2. AGC Read Data
AGC read data is the differential read signal after being bandwidth filtered and has passed through an
automatic gain control (AGC) amplifier that is used to keep the overall track amplitude set to a fixed
value.
A.1.2 Digital
1. Read Data
Read data is a pulse for every valid transition recorded on the disk surface.
2. Read Clock
Read clock is a pulse or window that is used by the data decoder as a basic clock to decode read data.
3. Read Gate
Read gate is active any time a physical sector or ID field is being read.
4. Write Gate (indicates when a write operation is occurring)
Write gate is active any time write current is being applied to one of the R/W heads.
5. Write Fault
Write fault becomes active when conditions in section “Write Safety” are not satisfied.
A.2 Servo Channel
A.2.1 Digital
All digital test points are TTL compatible and capable of sinking a minimum of 250 microampere.
1. SRV_AREA
When the servo system is working correctly in a normal operation, the SRV_AREA shows the timing of
embedded servo area. The area is protected from the write operation.
2. AGC_HOLD
When the servo system is working correctly with locking to the embedded servo pattern, the
AGC_HOLD signal is activated on the servo pattern to get PES from wedge burst pattern except the
write operation.
 Copyright IBM Corp. 1993
37
3. Index Pulse
The index test point must correspond with the beginning of the first physical sector of a track. The
minimum pulse width is 2 microseconds.
38
O E M Functional Specifications for IBM 3.5-Inch Hard Disk Drive
Appendix B. Mechanical Drawings
B.1 Isometric View
 Copyright IBM Corp. 1993
39
B.2 Outline Dimensions
40
O E M Functional Specifications for IBM 3.5-Inch Hard Disk Drive
B.3 Mounting Holes
Appendix B. Mechanical Drawings
41
B.4 Interface Connector
42
O E M Functional Specifications for IBM 3.5-Inch Hard Disk Drive
IBML
SC18-2274-00
Printed in Japan